ProShares Nasdaq-100 Dynamic Bu (QB) — Cost to Borrow & Stock Loan Fee
Latest borrow fee for QB: 12.92% per year (as of Jul 13, 2026 8:01 AM ET) . Shortable shares available: 0.
Over the last window (Jun 15, 2026 – Jul 13, 2026) , borrow fees ranged from 12.85% to 13.60%, averaging 13.18% across 673 samples.
Frequently asked questions
What is the cost to borrow QB?
The latest borrow fee for QB is 12.92% per year, sourced from IBKR.
Why does borrow fee change?
Borrow fees rise when fewer shares are available to lend and fall when supply grows. Low-float, high-interest names often show sharp intraday fee spikes.
How often is CTB updated?
finshort polls IBKR throughout each trading session. Borrow fees and shortable share counts are refreshed every few minutes during market hours.